WO2002084976A1 - Procede et systeme informatiques permettant de selectionner un ordinateur serveur de frontiere - Google Patents

Procede et systeme informatiques permettant de selectionner un ordinateur serveur de frontiere Download PDF

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Publication number
WO2002084976A1
WO2002084976A1 PCT/EP2002/002947 EP0202947W WO02084976A1 WO 2002084976 A1 WO2002084976 A1 WO 2002084976A1 EP 0202947 W EP0202947 W EP 0202947W WO 02084976 A1 WO02084976 A1 WO 02084976A1
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WO
WIPO (PCT)
Prior art keywords
server
computer
client
server computer
media
Prior art date
Application number
PCT/EP2002/002947
Other languages
English (en)
Inventor
Gerd Breiter
Winfried Bruegmann
Bernhard Schmid
Hendrik Wagner
Original Assignee
International Business Machines Corporation
Ibm Deutschland Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by International Business Machines Corporation, Ibm Deutschland Gmbh filed Critical International Business Machines Corporation
Priority to US10/474,972 priority Critical patent/US7426546B2/en
Priority to EP02704760A priority patent/EP1396132B1/fr
Priority to JP2002582582A priority patent/JP3994057B2/ja
Priority to DE60216918T priority patent/DE60216918T2/de
Publication of WO2002084976A1 publication Critical patent/WO2002084976A1/fr
Priority to US12/171,744 priority patent/US20080263177A1/en

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/80—Responding to QoS
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/50—Network services
    • H04L67/51—Discovery or management thereof, e.g. service location protocol [SLP] or web services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/1066—Session management
    • H04L65/1101—Session protocols
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/60—Network streaming of media packets
    • H04L65/61—Network streaming of media packets for supporting one-way streaming services, e.g. Internet radio
    • H04L65/612—Network streaming of media packets for supporting one-way streaming services, e.g. Internet radio for unicast
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H04L67/02—Protocols based on web technology, e.g. hypertext transfer protocol [HTTP]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H04L67/10—Protocols in which an application is distributed across nodes in the network
    • H04L67/1001—Protocols in which an application is distributed across nodes in the network for accessing one among a plurality of replicated servers
    • H04L67/1004—Server selection for load balancing
    • H04L67/1008—Server selection for load balancing based on parameters of servers, e.g. available memory or workload
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H04L67/10—Protocols in which an application is distributed across nodes in the network
    • H04L67/1001—Protocols in which an application is distributed across nodes in the network for accessing one among a plurality of replicated servers
    • H04L67/1004—Server selection for load balancing
    • H04L67/101—Server selection for load balancing based on network conditions
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H04L67/10—Protocols in which an application is distributed across nodes in the network
    • H04L67/1001—Protocols in which an application is distributed across nodes in the network for accessing one among a plurality of replicated servers
    • H04L67/1004—Server selection for load balancing
    • H04L67/1012—Server selection for load balancing based on compliance of requirements or conditions with available server resources
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H04L67/10—Protocols in which an application is distributed across nodes in the network
    • H04L67/1001—Protocols in which an application is distributed across nodes in the network for accessing one among a plurality of replicated servers
    • H04L67/1004—Server selection for load balancing
    • H04L67/1014—Server selection for load balancing based on the content of a request
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H04L67/10—Protocols in which an application is distributed across nodes in the network
    • H04L67/1001—Protocols in which an application is distributed across nodes in the network for accessing one among a plurality of replicated servers
    • H04L67/1004—Server selection for load balancing
    • H04L67/1021—Server selection for load balancing based on client or server locations
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H04L67/10—Protocols in which an application is distributed across nodes in the network
    • H04L67/1095—Replication or mirroring of data, e.g. scheduling or transport for data synchronisation between network nodes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/40—Network security protocols
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H04L67/10—Protocols in which an application is distributed across nodes in the network
    • H04L67/1001—Protocols in which an application is distributed across nodes in the network for accessing one among a plurality of replicated servers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H04L67/10—Protocols in which an application is distributed across nodes in the network
    • H04L67/1001—Protocols in which an application is distributed across nodes in the network for accessing one among a plurality of replicated servers
    • H04L67/10015—Access to distributed or replicated servers, e.g. using brokers

Definitions

  • the present invention relates to the field of data communication, in particular to distributing and streaming of data, for accessing digital information, including audio, video and business type information, at remotely stored locations and for communicating that information to a users premise .
  • a system for accessing digital information over a computer network contains a master server which is situated geographically so as to be accessible to network subscribers. It's geographic and network location is dependent upon communication network systems and subsystem cost and availability in " order to best serve a customers premise, whether it ' s a retail store or similar point-of-sale or other end-user-location. Security mechanisms that require centralized database authorization prior to the transmission of content and/or the manufacture of any of the products is provided in addition.
  • New media data extends traditional computer data formats into more natural data formats for the interaction of humans and computers by incorporating images, motion pictures, voice, audio and video.
  • One of the key problems with new media data is transferring the usually huge amounts of content through a network.
  • a stream server requires all data to be streamed to reside locally on the stream server.
  • the connection bandwidth to the rendering client (media player) has to fulfill at least the requirements corresponding to the nature of the data to be transmitted. For this reason stream servers are placed on so called edge servers (the edge of the network in the connection path to the client; also referred to as the "last mile").
  • the meta data or meta file usually contains at least an identification (key) of the media data to be streamed and the identification of the stream server e.g. the TCP/IP host name of the stream server machine and the port the stream server software listens to.
  • the web browser When a user wants to have media streamed to his client he normally "clicks" on a hyperlink identifying the media on the web page presented to him through his web browser.
  • the web browser generates a http request containing the media identification information.
  • the application server sends the media meta data to the client's web browser.
  • the web browser Based on that information the web browser typically invokes the corresponding media player which resides on a client and is responsible to receive the meta data from the network, negotiate connection to the stream server, receive and to render the data in parallel.
  • the invention allows to determine an edge server location to which the client is connected while sending the request for streaming to the application server. This determination is done by adding information to the client's http request containing the media identifier on the way to it's Web application server which is contacted by the client to select a file for downloading and/or streaming.
  • the Web application server is contacted by the client by inputting the corresponding uniform resource locator into the client's Web browser program.
  • the connection between the client and the Web application server is provided by establishing a communication path including a plurality of server computer nodes.
  • the first server computer node in the path from the client to the Web application server is the server topologically closest to the client which can thus be expected to be an efficient edge server to provide the streaming services with the best performance and shortest latency time for the client.
  • this server - being the first node in the path from the client to the Web application server - is selected by the Web application server or an associated media request broker to be the server from which the download of the desired file is to be performed.
  • the corresponding Meta data provided from the media request broker to the Web application server to the client contains data identifying the selected server.
  • the media request broker contains a file comprising a set of alternative servers being located in the same geographical or topological region as the first server node in the path between the client and the Web application server.
  • the server from which the download is to be performed is selected from the group comprising the set of servers in the same geographical / topological region as the node itself.
  • the selection of a particular server out of this group of servers is done based on a determination of a relative quality weight index of the server in the group.
  • the relative quality weight can be determined based on one or more of the following criteria: availability of the desired media on the server, number of transactions in process, usage of processing resources and available bandwidth in the communication path to the client.
  • the other server computers in the path from the client to the Web application server are also taken into consideration for the selection of the particular server.
  • each of these additional servers can also have associated regional servers which can also be taken into consideration for determining an appropriate server to perform the download and/or streaming operation.
  • a server computer can contain stream servers of different data formats. If a media is available on that server computer in a format which is different to the format required by the requesting client this server computer can still be selected to be the server computer of choice. In this case the data format available on the server computer is transcoded "on the fly” to the desired format and then streamed_to the client.
  • a particular field of application of the present invention is mobile communication, in particular with respect to digital telephony such as UMTS.
  • the client can be any mobile device, such as a mobile phone having an integrated MP3 player, a personal digital assistant or a portable computer, such as a Laptop or Palm top computer, having a wireless interface.
  • a particular advantage of the present invention is that by selecting a server based on it's quality weight the computer network can be balanced as far as the distribution of computing and/or bandwidth resources is concerned. The overall system throughput can thereby be optimized.
  • Fig. 1 is a block diagram of a first embodiment of a computer system of the invention
  • Fig. 2 is a block diagram of a second embodiment of a computer system of the invention.
  • Fig. 3 is an embodiment of a method of the invention.
  • the computer system of Fig. 1 has a client 1.
  • the client 1 has a web browser and a media player 2 , for example an IBM Video charger player .
  • the client 1 can connect with the help of his web browser to Web application server 3 via a computer network, such as the Internet comprising the edge servers ESI, ES2, ES3 , ES4 and other edge servers not shown in Fig. 1.
  • the edge server ESI has a media cache controller 4, stream server 5 and cache 6.
  • the stream server can be an IBM Video charger to interface with the corresponding media player 2 of client 1.
  • the streaming operation is performed out of the cache 6.
  • the media cache controller 4 controls and analyses the status and operation of stream server 5 and it's cache 6.
  • media cache controller 4 evaluates a present system status to provide a quality weight indicating the loading of the system.
  • the quality weight can include one or more of the following criteria: availability of the selected file in the cache 6, available bandwidth for connecting to the client 1, percentage of processing resources of the edge server ESI and/or other criteria.
  • edge server ESI has a memory 7 for storage of the identifier IDl of the edge server ESI.
  • Hook 8 is coupled to the memory 7.
  • Each of the edge servers passes the http requests and responses of the client and the web application server back and forth. For every http request coming from the client the edge server calls the hook 8 and passes this http request to it.
  • the hook examines this http request for a unique signature which identifies the request as a media request. If the hook identifies this signature it appends it's identifier IDl to the http request and passes the request back to the edge server. The edge server sends it to the next edge server ES2.. ESn - if there is one - or to the application server.
  • edge servers ES2 , ES3 and ES4 in the communication path between the client 1 and the Web application server 3 are of the same or a similar constitution than edge server ESI.
  • the computer system of Fig. 1 further includes media server 9 which stores the selected media 10.
  • Media server 9 can be coupled to anyone of the edge servers ESI to ES4 for downloading the media 10 to the corresponding edge server.
  • Web application server 3 is coupled to media request broker 11.
  • the media request broker 11 selects one of the edge servers ESI to ES4 or another edge server to perform the streaming operation of the desired data to client 1. Based on this selection of a server by media request broker 11 the Web application server generates the Meta data for the client 1.
  • the Web application server has a memory 12 for at least temporarily storing the http request of the client augmented by data indicative of one or more of the edge servers comprised in the communication path between the client 1 and the Web application server 3.
  • the Web application server further contains servlet 14 which is invoked through this http request when client 1 clicks on the Hyperlink to a media 10.
  • client 1 clicks on a hyperlink within a Web page 13 in it's Web browser program in order to request the desired media from the Web application server 3 via the Internet.
  • the web browser generates the corresponding http request which is routed through the edge servers ESI to ES4 such that a communication path including those edge servers results.
  • edge server ESI adds information to the http request to add it's identifier IDl to the request.
  • edge servers ES2 to ES4 also append corresponding data to the http request .
  • the resulting http request is composed of the original URL plus data indicative of the identifiers IDl to ID4.
  • servlet 14 is invoked with all the information contained within the client's http request and it transfers at least the extension to the media request broker 11.
  • the media request broker has a variety of options to select an appropriate edge server as a server for streaming of the desired file 10 to client 1.
  • One option is to select the edge server ESI as the edge server which is closest to the client 1 in the communication path which has been established through the Internet to the Web application server 3.
  • edge server ESI also provides highest bandwidth.
  • identity of the edge server ESI is determined by the media request broker by analyzing the appended extension provided by the hook running on each edge server ESI to ESn.
  • the media request broker 11 Based on this information the media request broker 11 generates the Meta data which is required by client 1 to access a stream server.
  • the Meta data includes the complete Network address of stream server 5 (e.g. IP-address and port) and a key for access to the desired media 10 is provided to client 1 by Web application server 3.
  • the client 1 In response to receipt of the Meta data the client 1 connects to the edge server ESI, in particular to stream server 5, to invoke the streaming operation. In case the desired media 10 is already available in the cache 6 the streaming can start immediately.
  • the Media request broker can also take into consideration the further edge servers ES2 to ES4 as identified by the extension provided by Servlet 14. In either case Media request broker 11 evaluates the quality weights provided by the Media cache controllers 4 of the corresponding edge servers ESI to ES4 to select the most suitable edge server.
  • the edge server ES2 may already contain the media 10 in it's cache ⁇ while the media 10 is not available in the cache 6 of the edge server ESI .
  • the quality weight of the edge server ES2 is greater than the quality weight of the edge server ESI even though the edge server ESI is closer to client 1 due to the fact that the edge server ES2 already has the required data.
  • edge server ES2 or another edge server can be selected by the Media request broker for other reasons, for example the edge server ESI being overloaded, the stream server 5 of the edge server ESI being down or not having the required data format .
  • Fig. 2 shows a further preferred embodiment of the invention wherein like elements are denoted by the same reference numerals.
  • the edge server ESI of the computer system of Fig. 2 has an additional media cache controller 15, stream server 16 and cache 17.
  • the stream server 16 is capable of streaming a different format than stream server 5.
  • edge server ESI has memory 7 and hook 8.
  • hook 8 serves to provide an extension to the http request provided by the client 1 to append information indicative of the identifier IDl of the edge server ESI .
  • edge server ESI On a second level of hierarchy the edge server ESI has a media edge controller 18 which communicates with the media cache controllers 4 and 15 of the individual stream servers 5 and 16.
  • the computer system comprises the edge servers ESla, ESlb, ESlc and ESld which are located in the same geographical/topological region or area 19 of the edge server ESI.
  • the other edge servers ES2 to ES4 can be associated to corresponding additional edge servers in their respective regions or areas .
  • the database 20 stored by the media request broker 11.
  • the database 20 groups edge servers of each of the regions or areas; for example in case of the region 19 it assigns the edge server ESI to the additional edge servers ESla to ESld.
  • the database 20 can contain similar entries for the further edge servers ES2 to ES4.
  • the media request broker 11 When the media request broker 11 obtains the extension from servlet 14 it identifies the first edge server in the path between client 1 and Web application server 3 - which is the edge server ESI. In the next step media request broker 11 identifies the additional edge servers ESla to ESld being located in the same geographical/topological region 19 of the edge server ESI by querying database 20.
  • the media request broker 11 obtains the relative quality weights from the media cache controllers and/or media edge controllers of the respective group of edge servers of the region 19.
  • the media request broker 11 selects the stream server providing the highest quality weight from this group of edge servers .
  • the media request broker 11 performs an equivalent operation for the next edge server ES2 and the associated regional group of additional edge servers not shown in Fig. 2 to search for a stream server having a sufficient quality weight.
  • the media request broker 11 returns a stream server address to the Web application server 3 based on which the meta data for client 1 is generated.
  • media request broker 11 sel.ect - for example - Edge Server ESI with stream server 16 even though the actual media to be streamed is only residing in the cache of stream server 5 in the format of stream server 5 which is not compatible to the format necessary for media player 2 at the client.
  • the edge server ESI has a transcoder program for transcoding the data provided by stream server 16 into the required format of the media player 2.
  • the transcoding is initiated by media request broker with a corresponding message to the media edge controller.
  • the requested media taken from the cache of Stream Server 16 is transcoded and the resulting media is stored in the cache of Stream Server 5.
  • a meta file is generated pointing to stream server 5 and the media would be streamed from stream server 5 to the media player.
  • Fig. 3 now a preferred embodiments of a method of the invention is explained in greater detail .
  • a client connects to a web page containing hyperlinks to media objects (e.g. Media files) .
  • media objects e.g. Media files
  • step 3 a Web Browser generates a http request containing the unique signature of the media request.
  • Step 4 is a for-next-loop containing the following steps 5, 6 and 7 :
  • step 6 it is decided if a media request signature is present. If this is the case an ID of the edge server ESm is appended to the http request in step 7 and the control goes back to step 5 with an incremented m. Otherwise m is incremented directly and the control goes back to step 5 as long as m remains lesser or equal to n.
  • step 8 the Http request arrives at the Web Application Server.
  • step 9 the Web Application Server invokes a servlet and passes a URL and the extension (s) of the Edge Servers to the Servlet .
  • the extension of the URL is accessed in step 10 by the servlet to provide the extension to the media request broker in step 11.
  • a potential edge server is the first edge server in the communication path between the client and the Web page - which is edge server ESI - or an edge server from a regional group of the edge server ESI and/or one of the edge servers ES2 to ES4 and/or corresponding regional groups of the edge servers ES2 to ES4.
  • step 13 the media request broker selects an appropriate edge server based on the quality weight as determined in step 12.
  • step 14 Based on the selected edge server corresponding media data is generated in step 14 which is send to the client in step 15.
  • the client connects to the edge server indicated in the meta data and provides the key to the edge server to initiate the streaming in step 160.
  • the streaming actually starts in step 17.
  • a method for selecting a first server computer for sending of data to a client computer comprising the steps of: accessing a second server computer through a path in a computer network, the path comprising a first set of server computers,
  • the second server computer being a Web application server comprising a Web page with a Hyperlink referencing the data to be send to the client, the hyperlink including a unique signature
  • the method further comprising the step of selecting the Hyperlink by the client; subsequently generating an http request out of this hyperlink by a web browser; this http request containing the unique signature identifying the media request .
  • the information being indicative of the server computer of the first set of server computers being the first node in the path, determining a quality weight based on the information for the first server computer node in the path and for the server computers of the second set of server computers belonging to that server computer node,
  • the quality weights being determined based on one or more of the following criteria: availability of the data on a server computer, number of transactions in process on the server computer, percentage of processing resources in use on the server computer, communication bandwidth available in the communication link with the client.
  • a server computer system comprising a stream server (5, 16) and storage means (6, 17) for storing and/or buffering of data to be streamed to a client (1) , means (7) for storing an identifier of the server computer and means (8) for adding information to a locator provided by the client, the information being indicative of the identifier.
  • the server computer system of definition 9 further comprising means for converting of the data from one stream format to another.
  • a computer system comprising a Web application server (3) and a media request broker (11) , the Web application server containing a Web page (13) with a Hyperlink referencing a media (10) to be streamed to a client (1) and means (12) for at least temporarily storing of information indicative of a first node in a communication path between the client and the Web application server in a computer network, means (14) for providing the information to the media request broker upon selection of the Hyperlink by the client, and means (20) for selecting a stream server for streaming the data to the client based on the information.
  • a system for selecting a first server computer from a plurality of server computers for sending of data to a client comprising means adapted for carrying out the steps of the method according to anyone of the preceding definitions 1 to 8.
  • a data processing program for execution in a data processing system comprising software code portions for performing a method according to anyone of the definitions 1 to 8 when the program is run on the computer.
  • a computer program product stored on a computer usable medium comprising computer readable program means for causing a computer to perform a method according to anyone of the definitions 1 to 8 when the program is run on the computer .

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Hardware Design (AREA)
  • General Engineering & Computer Science (AREA)
  • General Business, Economics & Management (AREA)
  • Business, Economics & Management (AREA)
  • Information Transfer Between Computers (AREA)
  • Computer And Data Communications (AREA)
  • Image Generation (AREA)
  • Information Retrieval, Db Structures And Fs Structures Therefor (AREA)

Abstract

La distribution de médias pour Internet est mise en oeuvre par l'intermédiaire de serveurs d'applications, de serveurs de contenus et de serveurs de frontière répartis; dans le procédé décrit dans cette invention, les clients sont connectés à des services de distribution de médias. Un système informatique comprend un premier client (1), possédant un navigateur web équipé d'un diffuseur de médias (2), un serveur d'applications web (3), un serveur de contenus, des serveurs de frontière ES1 à ES4 et un système de courtage (11) des demandes de médias. Une fois que le client (1) a sélectionné un média devant être transmis en continu, le système de courtage (11) détermine le serveur de frontière approprié capable d'exécuter l'opération de transmission en continu. Cette décision est prise en fonction d'une extension de la demande http du client émanant du serveur de frontière et transmise par l'intermédiaire du serveur d'application au système de courtage. (figure 1)
PCT/EP2002/002947 2001-04-18 2002-03-16 Procede et systeme informatiques permettant de selectionner un ordinateur serveur de frontiere WO2002084976A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
US10/474,972 US7426546B2 (en) 2001-04-18 2002-03-16 Method for selecting an edge server computer
EP02704760A EP1396132B1 (fr) 2001-04-18 2002-03-16 Procede et systeme informatiques permettant de selectionner un ordinateur serveur de frontiere
JP2002582582A JP3994057B2 (ja) 2001-04-18 2002-03-16 エッジ・サーバ・コンピュータを選択する方法およびコンピュータ・システム
DE60216918T DE60216918T2 (de) 2001-04-18 2002-03-16 Verfahren und computersystem zur auswahl eines randservercomputers
US12/171,744 US20080263177A1 (en) 2001-04-18 2008-07-11 Method and computer system for selecting an edge server computer

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP01109563 2001-04-18
EP01109563.5 2001-04-18

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US12/171,744 Continuation US20080263177A1 (en) 2001-04-18 2008-07-11 Method and computer system for selecting an edge server computer

Publications (1)

Publication Number Publication Date
WO2002084976A1 true WO2002084976A1 (fr) 2002-10-24

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007510226A (ja) * 2003-10-27 2007-04-19 ヒューレット−パッカード デベロップメント カンパニー エル．ピー． ネットワークコンポーネントを動的に設定する方法及びシステム
US7426546B2 (en) 2001-04-18 2008-09-16 International Business Machines Corporation Method for selecting an edge server computer
US7941553B2 (en) 2002-10-18 2011-05-10 International Business Machines Corporation Method and device for streaming a media file over a distributed information system
WO2013076635A1 (fr) * 2011-11-23 2013-05-30 Telefonaktiebolaget Lm Ericsson (Publ) Géolocalisation de précision pour la mise en cache d'un contenu dans des cœurs de réseaux paquets évolués

Families Citing this family (59)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020002039A1 (en) 1998-06-12 2002-01-03 Safi Qureshey Network-enabled audio device
US8942082B2 (en) 2002-05-14 2015-01-27 Genghiscomm Holdings, LLC Cooperative subspace multiplexing in content delivery networks
US7187681B1 (en) * 2002-06-11 2007-03-06 Cisco Technology, Inc. Method and apparatus for traffic quality and billing authorization by request token insertion
US8782654B2 (en) 2004-03-13 2014-07-15 Adaptive Computing Enterprises, Inc. Co-allocating a reservation spanning different compute resources types
EP2341431A1 (fr) 2004-03-13 2011-07-06 Adaptive Computing Enterprises, Inc. Système et procédé pour auto-optimiser la réservation du temps de ressources informatiques
US9826046B2 (en) * 2004-05-05 2017-11-21 Black Hills Media, Llc Device discovery for digital entertainment network
US8028323B2 (en) 2004-05-05 2011-09-27 Dryden Enterprises, Llc Method and system for employing a first device to direct a networked audio device to obtain a media item
US8028038B2 (en) 2004-05-05 2011-09-27 Dryden Enterprises, Llc Obtaining a playlist based on user profile matching
US20070266388A1 (en) 2004-06-18 2007-11-15 Cluster Resources, Inc. System and method for providing advanced reservations in a compute environment
US9325805B2 (en) 2004-08-02 2016-04-26 Steve J Shattil Content delivery in wireless wide area networks
US8176490B1 (en) 2004-08-20 2012-05-08 Adaptive Computing Enterprises, Inc. System and method of interfacing a workload manager and scheduler with an identity manager
CA2586763C (fr) 2004-11-08 2013-12-17 Cluster Resources, Inc. Systeme et procede fournissant des executions de systeme au sein d'un environnement informatique
US8863143B2 (en) 2006-03-16 2014-10-14 Adaptive Computing Enterprises, Inc. System and method for managing a hybrid compute environment
US9015324B2 (en) 2005-03-16 2015-04-21 Adaptive Computing Enterprises, Inc. System and method of brokering cloud computing resources
EP2362310B1 (fr) 2005-03-16 2017-10-04 III Holdings 12, LLC Transfert automatique de charge de travail vers un centre sur demande
US9231886B2 (en) 2005-03-16 2016-01-05 Adaptive Computing Enterprises, Inc. Simple integration of an on-demand compute environment
US8782120B2 (en) 2005-04-07 2014-07-15 Adaptive Computing Enterprises, Inc. Elastic management of compute resources between a web server and an on-demand compute environment
EP1872249B1 (fr) 2005-04-07 2016-12-07 Adaptive Computing Enterprises, Inc. Acces a la demande a des ressources informatiques
AU2010201379B2 (en) * 2010-04-07 2012-02-23 Limelight Networks, Inc. System and method for delivery of content objects
FR2889012B1 (fr) * 2005-07-22 2007-08-24 Alcatel Sa Dispositif de gestion de ressources de serveurs media pour l'interfacage entre serveurs d'applications et serveurs media au sein d'un reseau de communication
US7698061B2 (en) 2005-09-23 2010-04-13 Scenera Technologies, Llc System and method for selecting and presenting a route to a user
US20080212971A1 (en) * 2005-12-16 2008-09-04 Tamir Shaanan Wireless Infrared Multimedia System
US20100198977A1 (en) * 2006-09-27 2010-08-05 Adobe Systems Incorporated Automatic live stream trees
US8041773B2 (en) 2007-09-24 2011-10-18 The Research Foundation Of State University Of New York Automatic clustering for self-organizing grids
US8270937B2 (en) * 2007-12-17 2012-09-18 Kota Enterprises, Llc Low-threat response service for mobile device users
US8010601B2 (en) 2007-12-21 2011-08-30 Waldeck Technology, Llc Contiguous location-based user networks
US8024431B2 (en) * 2007-12-21 2011-09-20 Domingo Enterprises, Llc System and method for identifying transient friends
CN101534241B (zh) * 2008-03-14 2012-07-04 华为技术有限公司 一种减轻网络流量的方法、系统及一种会话控制单元
US8725740B2 (en) 2008-03-24 2014-05-13 Napo Enterprises, Llc Active playlist having dynamic media item groups
US20100010997A1 (en) * 2008-07-11 2010-01-14 Abo Enterprise, LLC Method and system for rescoring a playlist
US20100017261A1 (en) * 2008-07-17 2010-01-21 Kota Enterprises, Llc Expert system and service for location-based content influence for narrowcast
US8504073B2 (en) 2008-08-12 2013-08-06 Teaneck Enterprises, Llc Customized content delivery through the use of arbitrary geographic shapes
US7921223B2 (en) 2008-12-08 2011-04-05 Lemi Technology, Llc Protected distribution and location based aggregation service
US20120047087A1 (en) 2009-03-25 2012-02-23 Waldeck Technology Llc Smart encounters
US8874724B2 (en) 2009-08-26 2014-10-28 At&T Intellectual Property I, L.P. Using a content delivery network for security monitoring
US20110088076A1 (en) * 2009-10-08 2011-04-14 Futurewei Technologies, Inc. System and Method for Media Adaptation
US11720290B2 (en) 2009-10-30 2023-08-08 Iii Holdings 2, Llc Memcached server functionality in a cluster of data processing nodes
US10877695B2 (en) 2009-10-30 2020-12-29 Iii Holdings 2, Llc Memcached server functionality in a cluster of data processing nodes
US11330046B2 (en) 2010-03-01 2022-05-10 Tybalt, Llc Content delivery in wireless wide area networks
US10419533B2 (en) 2010-03-01 2019-09-17 Genghiscomm Holdings, LLC Edge server selection for device-specific network topologies
US8244874B1 (en) 2011-09-26 2012-08-14 Limelight Networks, Inc. Edge-based resource spin-up for cloud computing
KR101398319B1 (ko) * 2011-04-15 2014-05-22 스카이파이어 랩스, 인크. 실시간 비디오 검출기
US10069885B2 (en) * 2013-03-18 2018-09-04 Ericsson Ab Bandwidth management for over-the-top adaptive streaming
US20130254417A1 (en) * 2012-03-21 2013-09-26 Jason Nicholls System method device for streaming video
US9438883B2 (en) * 2012-04-09 2016-09-06 Intel Corporation Quality of experience reporting for combined unicast-multicast/broadcast streaming of media content
US9009354B2 (en) * 2012-12-20 2015-04-14 Sap Se Services and management layer for diverse data connections
US8972513B2 (en) * 2013-08-05 2015-03-03 Iboss, Inc. Content caching
US8788703B1 (en) 2013-08-05 2014-07-22 Iboss, Inc. Content caching
US10680742B2 (en) * 2014-06-27 2020-06-09 Agora Lab, Inc. Systems and methods for improved communication packet delivery over a public network
KR101977109B1 (ko) * 2015-11-17 2019-08-28 (주)마크애니 해시함수 기반의 대규모 동시 전자서명 서비스 시스템 및 그 방법
US10791168B1 (en) 2018-05-21 2020-09-29 Rafay Systems, Inc. Traffic aware network workload management system
WO2020049489A1 (fr) * 2018-09-06 2020-03-12 Nokia Technologies Oy Procédé et appareil de liaison de descripteur de flux dans un environnement de diffusion en continu
JP7183762B2 (ja) * 2018-12-19 2022-12-06 日本電信電話株式会社 サーバ選択装置、サーバ選択方法及びプログラム
CN114073059A (zh) * 2019-03-29 2022-02-18 三星电子株式会社 用于在无线通信系统中提供边缘计算服务的设备和方法
US10489789B1 (en) 2019-05-02 2019-11-26 Capital One Services, Llc Systems and methods for providing notifications to devices
WO2021135663A1 (fr) * 2019-12-31 2021-07-08 华为技术有限公司 Procédé, dispositif et système de détermination d'instance d'application
CN111556514B (zh) * 2020-04-14 2021-09-21 北京航空航天大学 一种去中心化的移动边缘计算资源发现和选择方法及系统
CN112601114B (zh) * 2020-12-14 2023-03-21 杭州当虹科技股份有限公司 一种基于钩子回调的gb28181按需拉流实现方法
US11936757B1 (en) 2022-04-29 2024-03-19 Rafay Systems, Inc. Pull-based on-demand application deployment to edge node

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000029990A1 (fr) * 1998-11-18 2000-05-25 Infolibria, Inc. Serveur de contenu efficace mettant en application une redirection de demande

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9624419D0 (en) 1996-11-23 1997-01-08 Inmedia Investment Ltd Communication system for delivery of content over electronic networks
US6038599A (en) * 1997-04-23 2000-03-14 Mpath Interactive, Inc. Latency server and matchmaker
US6230200B1 (en) * 1997-09-08 2001-05-08 Emc Corporation Dynamic modeling for resource allocation in a file server
US6327622B1 (en) * 1998-09-03 2001-12-04 Sun Microsystems, Inc. Load balancing in a network environment
JP2001007844A (ja) 1999-06-24 2001-01-12 Canon Inc ネットワークステータスサーバ及び情報配信システム、及びその制御方法、及びその制御プログラムを格納した記憶媒体
US6970913B1 (en) * 1999-07-02 2005-11-29 Cisco Technology, Inc. Load balancing using distributed forwarding agents with application based feedback for different virtual machines
US7577754B2 (en) * 2000-04-28 2009-08-18 Adara Networks, Inc. System and method for controlling access to content carried in a caching architecture
US7000008B2 (en) * 2001-04-16 2006-02-14 Sun Microsystems, Inc. Method, system, and program for providing data updates to a page including multiple regions of dynamic content
WO2002084976A1 (fr) 2001-04-18 2002-10-24 International Business Machines Corporation Procede et systeme informatiques permettant de selectionner un ordinateur serveur de frontiere

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000029990A1 (fr) * 1998-11-18 2000-05-25 Infolibria, Inc. Serveur de contenu efficace mettant en application une redirection de demande

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
DE BRA P M E ET AL: "Information retrieval in the World-Wide Web: Making client-based searching feasible", COMPUTER NETWORKS AND ISDN SYSTEMS, NORTH HOLLAND PUBLISHING. AMSTERDAM, NL, vol. 27, no. 2, 1 November 1994 (1994-11-01), pages 183 - 192, XP004037989, ISSN: 0169-7552 *
MOURAD A ET AL: "SCALABLE WEB SERVER ARCHITECTURES", PROCEEDINGS IEEE INTERNATIONAL SYMPOSIUM ON COMPUTERS AND COMMUNICATIONS, XX, XX, 1 July 1997 (1997-07-01), pages 12 - 16, XP000199852 *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7426546B2 (en) 2001-04-18 2008-09-16 International Business Machines Corporation Method for selecting an edge server computer
US7941553B2 (en) 2002-10-18 2011-05-10 International Business Machines Corporation Method and device for streaming a media file over a distributed information system
JP2007510226A (ja) * 2003-10-27 2007-04-19 ヒューレット−パッカード デベロップメント カンパニー エル．ピー． ネットワークコンポーネントを動的に設定する方法及びシステム
JP4809236B2 (ja) * 2003-10-27 2011-11-09 ヒューレット−パッカード デベロップメント カンパニー エル．ピー． ネットワークコンポーネントを動的に設定する方法及びシステム
WO2013076635A1 (fr) * 2011-11-23 2013-05-30 Telefonaktiebolaget Lm Ericsson (Publ) Géolocalisation de précision pour la mise en cache d'un contenu dans des cœurs de réseaux paquets évolués

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JP2004523854A (ja) 2004-08-05
DE60216918D1 (de) 2007-02-01
JP3994057B2 (ja) 2007-10-17
ATE349130T1 (de) 2007-01-15
US20040148393A1 (en) 2004-07-29
DE60216918T2 (de) 2007-08-30

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